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List of geological units in Tokyo metropolis

A list of stratigraphic units, igneous bodies, and geological structures reported from Tokyo metropolis, Kanto region, Honshu island, Japan.

Photographs of geological units in Tokyo metropolis

Permian (298.9-252.17 Ma)
Onari formation?
Triassic (252.17-201.3 Ma)
Oguno formation
Jurassic (201.3-145.0 Ma)
Chichibu Belt
Nariki Unit
Raidenyama Unit
Minokuchi Unit
Southern Chichibu Belt
Urayama Group
Kawanori Unit
Unazawa Unit
Hikawa Unit
Gozenyama Unit
Shiromaru formation
Takamizuyama Unit
Fukazawa Unit
Kawai formation
Itsukaichi formation
Tamagawa group
Otaki group
Cretaceous (145.0-66.0 Ma)
Torinosu limestone
Masutomi group
Northern Shimanto Belt
Ogochi Group
Wanakurasawa Unit
Ichinosawa Unit
Kumotoriyama Unit
Aoiwa formation
Nanatsuishiyama formation
Shiraiwayama formation
Happyakudani Unit
Koreisan Unit
Funekubo formation
Kobotoke Group
Miyama Unit
Bonborigawa Unit
Kobuse Unit
Southern Shimanto Belt
Sagamiko Group
Gongenyama Unit
Eocene (56.0-33.9 Ma)
Mikazukiyama Formation
Asahiyama Formation
Maruberiwan Formation
John Beach Volcanics
Sekimon Formation
Nishiura Formation
Higashidai Formtion
Oligocene - Miocene
Minamizaki Formation
Miocene (23.03-5.33 Ma)
Itsukaichimachi Group
Ajiro Formation
Akikawa Formation
Yokosawa Sandstone and Mudstone Member
Ina Sandstone Member
Takao Tuff Member
Tateya Mudstone Member
Habu Tuff Member
Kosho Mudstone Member
Sajikami Conglomerate Member
Tanzawa group (Misaka group)
Mitosan Quartz Diorite
Zenisu Volcanic Rocks
Pliocene (5.33-2.58 Ma)
Kazusa Group
Narikigawa Formation
Osoki Formation
Tomoda Formation
Yamada Formation
Nihondake Formation
Tomioka Formation
Hanno Formation
Onita Formation
Kasumi Formation
Tate Formation
CGS 1 Tephra
CGS 2 Tephra
CGS 3 Tephra
CGS 4 Tephra
CGS 5 Tephra
CGS 6 Tephra
TMD 1 Tephra
TMD 2 Tephra
TMD 3 Tephra
TMD 4 Tephra
TMD 5 Tephra
TMD 6 Tephra
TMD 7 Tephra
TMD 8 Tephra
Sannotani Tephra
Ongata Tephra
Kol Tephra
Pliocene - Pleistocene
Kazusa Group (Kitatama group)
Dedana Formation
Inagi Formation
Oyabe Formation
Terada Formation
Takatsu Formation
Iimuro Formation
Ikuta formation
Edogawa Formation
Toneri Formation
Higashikurume Formation
Kitatama Formation
Kiwada Formation
Fudeshima volcano
Pleistocene (2.58- 0.01Ma)
Kazusa Group
Sayama Formation
Yatsu Clay Member
Mitsugi Conglomerate Member
Mizuho Conglomerate Member
Oyamada Formation
Renkoji Formation
Hirayama Formation
Fukushima Formation
Ongata Formation
Motohachioji Formation
Komiya Formation
Tokyo Formation
Tsurumi formation
Setagaya Formation
Musashino Terrace Deposit
Gotentoge Terrace Deposit
Gotentoge 1 Terrace Deposit
Gotentoge 2 Terrace Deposit
Gotentoge 3 Terrace Deposit
Imokubo Formation
Mine Formation
Ome Formation
Karaborigawa Formation
Kuromegawa Formation
Tokorozawa Formation
Nakadai Formation
Akabane Formation
Kodaira Formation
Narimasu Formation
Aoyagi Formation
Tachikawa 1 Formation
Tachikawa 2 Formation
Toshitorazu Formation
Okata volcano
Gyojanoiwaya volcano
Oshima volcano
Pre-caldera stage
Older edifice
Younger edifice
Jinaijima volcano
Niijima island
Oiso volcano
Jinakayama volcano
Shimawakezawa Volcaniclastic Deposits
Marushimamine volcano
Setoyama volcano
Daisanyama Volcaniclastic Deposits
Minejiyama volcano
Akazakinomine volcano
Habushiiso volcano
Miyatsukayama volcano
Hatashironohana volcano
Niijimayama volcano
Kozushima island
Menbo volcano
Nagahama volcano
Kannonura volcano
Hashiruma volcano
Sanukayama volcano
221m-yama volcano
262m-yama volcano
Nachisan volcano
Matsuyamabana volcano
Osawa volcano
Takodoyama volcano
Jogoyama volcano
Tadanaejima volcano
Onbasejima volcano
Kanto Loam
Tachikawa Loam
Musashino Loam
Shimosueyoshi Loam (Kissawa loam bed)
Tama Loam
Tsuchihashi loam bed (Tsuchiya loam bed, Nanakunitoge loam bed)
Tama II Loam
Upper member (Soda formation, Maioka formation)
Middle member (Fujisawa formation, Nishine formation)
Lower member (Shimoniwa formation)
Tama I Loam (Zasshoku loam bed, Sannodai loam bed)
Kanekosaka loam bed
Kurokawa Formation
Kobiki Terrace Deposit
Hino Terrace Deposit
HU1
HU2
Zushi 2 Tephra
SGO Tephra
Kamiofune Tephra
Yarimizu Tephra
TN Tephra
Shirobeta Tephra
Ng-YR Tephra
Hosoyama Tuff
Motohachioji Tephra
Nisemitukumi Pumice
HdP-1
HdP-2
HdP-3
Mitskumi Pumice
HcP-1
HcP-2
HBP
Oshinuma Pumice Group
Go1 Tephra
Go2 Tephra
Sanshoku Ice pumice bed (SIP)
KIP6 pumice bed
KIP7 pumice bed
KIP8 pumice bed
Ontake-1 pumice bed (Pm-1)
Obaradai pumice bed (OP, Kuriyokan pumice bed, KuP)
Oya pumice bed (Kmp-7)
Oyako pumice bed
Tokyo pumice bed (TP)
Aira-Tn pumice bed (AT, Tanzawa pumice bed, Tn)
Aoiro scoria bed (BCVA)
Miura pumice bed (MP)
Black band bed (BB)
Black band-2 bed (BB)
UG tuff bed
Biotite bed (BP)
Biotite bed (BA)
Bokeyotsu pumice bed
Doran pumice bed
Bireleys pumice bed
Uwabami pumice bed
Oshinuma formation
Yamanote formation
Tokyo conglomerate formation
Narita group
Byobugaura formation
Totohara formation
Nanagochi Formation
T2 River Terrace Deposit, Itsukaichi
Pleistocene-Holocene
Yurakucho Formation
Oshima volcano
Lateral volcanoes
Sadoyama volcano
Hachinoshiri volcano
Atagoyama volcano
Akappage volcano
Mitsumine volcano
603.6m-yama volcano
Omaruyama volcano
Jinooka volcano
Itonashi volcano
Shikubo volcano
Goishihama volcano
Kotsuki volcano
Shiroishiyama volcano
Futagoyama volcano
480m-yama volcano
378.4m-yama volcano
Toshima volcano
Main stratovolcano
Volcaniclastic deposits
Shikinejima volcano
Hanshima volcano
Udoneshima volcano
Kozushima island
Chichibuyama Pyroclastic Deposits
Miyakejima volcano
Main cone
Main cone proper
Older parasitic cone and crater
Miogataira crater
Miogataira Lava
Nitanda crater
Maruyama
Daihannyayama
Kuwanokitaira Parasitic Cone
Anegakata Lava
Oana
Koshikiana
Misodoana
Suoana
Yamamio explosion crater
Furumio explosion crater
Mizutamari explosion crater
Kanaso explosion crater
Miike explosion crater
Mikurajima volcano
Main stratovolcano
Lava dome group
Tsubunegamori Lava Dome
650m-oka Lava Dome
Yasukajigamori Lava Dome
Inambajima volcano
Hachijojima volcano
Higashiyama volcano
Central cone
Parasitic crater
Post-caldera cone
Pre-caldera cone
Old volcanoes
Kojima volcano
Goshotai volcano
Yokomagaura volcano
Holocene (0.01-0 Ma)
City museum Formation
Yashiro Formation
Rinsenji Formation
Chigase Formation
Hatakenaka Formation
Amagase Formation
Kamiyashiki Formation
Kawasaki Formation
Akiruppara Formation
Haijima Formation
Midorimachi Formation
Tokumaru shell bed
Oji shell bed
Tabata shell bed
Takinogawa shell bed
Oshima volcano
Pre-caldera stage
Younger edifice
Syn-caldera stage
S1 Member
S' Member
S2 Member
Izu-Oshima S2-c Lahar Deposit
Post-caldera stage
Izu-Oshima 2013 Lahar Deposit
1954 Lava
1950 Lava
Yuba Formation
Y1 Member
1778 Lava
Miharayama Scoria Cone
Y2 Member
Y3 Member
Y4 Member
Y5 Member
Y6 Member
Nomashi Formation
N1 Member
N2 Member
N3 Member
N4 Member
Toshima volcano
Parasitic crater lava
Kajiana Lava
Miana Lava
Niijima island
Wakago volcano
Acchiyama volcano
Mukaiyama volcano
Mukaiyama Tephra
Kozushima island
Hanatate volcano
Ananoyama volcano
Kobeyama volcano
Tenjosan volcano
Tenjosan Tephra
Miyakejima volcano
Central cone
Younger parasitic cone and crater
1940 Lava
Hyotanyama Parasitic Cone
Hyotanyama Lava
H scoria cone
G scoria cone
F crater
E craters
D scoria cone
Yoridaizawa Lava
C crater
B' craters
Akabakyo Lava
B scoria cone
A scoria cone
1874 Lava
1835 Lava
Shitori Lava
Anafutatsu Parasitic Cone
Usuki Lava
Shinmio explosion crater
Nippana Lava
Kamikoshiki Parasitic Cone
Sabigahama Lava
Koshikiiwa Scoria Cone
Imasaki Lava
Ako Lava
Benkenemisaki Lava
Hachijojima volcano
Nishiyama volcano
Scoria cones
Tuff cones
Main cone
Kaminatominato Lava
Funatogahana Lava
Nishiyamanantoroku Lava
Nishinoshima volcano
1973-74 products
Nishinoshima Lava
T3 River Terrace Deposit, Itsukaichi
T4 River Terrace Deposit, Itsukaichi
T5 River Terrace Deposit, Itsukaichi
Age unknown
Ibashi formation
Nakadai formation
Hino formation
Ekoda formation
Johoku formation
Tokorozawadai formation
Shirakogawa formation
Shimosueyoshi formation
Izu-Oshima volcano
Anei lava
Showa lava
Geological structures
Butsuzo tectonic line